text: /*
   * Copyright 2005-2018 ECMWF.
   *
   * This software is licensed under the terms of the Apache Licence Version 2.0
   * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
   *
   * In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
   * virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
   */
  
  /************************************
   *  Enrico Fucile
   ***********************************/
  
  #include "grib_api_internal.h"
  
  /* 
     This is used by make_class.pl
  
     START_CLASS_DEF
     CLASS      = accessor
     SUPER      = grib_accessor_class_long
     IMPLEMENTS = unpack_long;pack_long;unpack_string
     IMPLEMENTS = init;dump;value_count
     MEMBERS=const char* century
     MEMBERS=const char* year
     MEMBERS=const char* month
     MEMBERS=const char* day
     END_CLASS_DEF
  
   */
  
  /* START_CLASS_IMP */
  
  /*
  
  Don't edit anything between START_CLASS_IMP and END_CLASS_IMP
  Instead edit values between START_CLASS_DEF and END_CLASS_DEF
  or edit "accessor.class" and rerun ./make_class.pl
  
  */
  
  static int pack_long(grib_accessor*, const long* val,size_t *len);
  static int unpack_long(grib_accessor*, long* val,size_t *len);
  static int unpack_string (grib_accessor*, char*, size_t *len);
  static int value_count(grib_accessor*,long*);
  static void dump(grib_accessor*, grib_dumper*);
  static void init(grib_accessor*,const long, grib_arguments* );
  static void init_class(grib_accessor_class*);
  
  typedef struct grib_accessor_g1date {
      grib_accessor          att;
  /* Members defined in gen */
  /* Members defined in long */
  /* Members defined in g1date */
  	const char* century;
  	const char* year;
  	const char* month;
  	const char* day;
  } grib_accessor_g1date;
  
  extern grib_accessor_class* grib_accessor_class_long;
  
  static grib_accessor_class _grib_accessor_class_g1date = {
      &grib_accessor_class_long,                      /* super                     */
      "g1date",                      /* name                      */
      sizeof(grib_accessor_g1date),  /* size                      */
      0,                           /* inited */
      &init_class,                 /* init_class */
      &init,                       /* init                      */
      0,                  /* post_init                      */
      0,                    /* free mem                       */
      &dump,                       /* describes himself         */
      0,                /* get length of section     */
      0,              /* get length of string      */
      &value_count,                /* get number of values      */
      0,                 /* get number of bytes      */
      0,                /* get offset to bytes           */
      0,            /* get native type               */
      0,                /* get sub_section                */
      0,               /* grib_pack procedures long      */
      0,                 /* grib_pack procedures long      */
      &pack_long,                  /* grib_pack procedures long      */
      &unpack_long,                /* grib_unpack procedures long    */
      0,                /* grib_pack procedures double    */
      0,              /* grib_unpack procedures double  */
      0,                /* grib_pack procedures string    */
      &unpack_string,              /* grib_unpack procedures string  */
      0,          /* grib_pack array procedures string    */
      0,        /* grib_unpack array procedures string  */
      0,                 /* grib_pack procedures bytes     */
      0,               /* grib_unpack procedures bytes   */
      0,            /* pack_expression */
      0,              /* notify_change   */
      0,                /* update_size   */
      0,            /* preferred_size   */
      0,                    /* resize   */
      0,      /* nearest_smaller_value */
      0,                       /* next accessor    */
      0,                    /* compare vs. another accessor   */
      0,     /* unpack only ith value          */
      0,     /* unpack a subarray         */
      0,              		/* clear          */
      0,               		/* clone accessor          */
  };
  
  
  grib_accessor_class* grib_accessor_class_g1date = &_grib_accessor_class_g1date;
  
  
  static void init_class(grib_accessor_class* c)
  {
  	c->next_offset	=	(*(c->super))->next_offset;
  	c->string_length	=	(*(c->super))->string_length;
  	c->byte_count	=	(*(c->super))->byte_count;
  	c->byte_offset	=	(*(c->super))->byte_offset;
  	c->get_native_type	=	(*(c->super))->get_native_type;
  	c->sub_section	=	(*(c->super))->sub_section;
  	c->pack_missing	=	(*(c->super))->pack_missing;
  	c->is_missing	=	(*(c->super))->is_missing;
  	c->pack_double	=	(*(c->super))->pack_double;
  	c->unpack_double	=	(*(c->super))->unpack_double;
  	c->pack_string	=	(*(c->super))->pack_string;
  	c->pack_string_array	=	(*(c->super))->pack_string_array;
  	c->unpack_string_array	=	(*(c->super))->unpack_string_array;
  	c->pack_bytes	=	(*(c->super))->pack_bytes;
  	c->unpack_bytes	=	(*(c->super))->unpack_bytes;
  	c->pack_expression	=	(*(c->super))->pack_expression;
  	c->notify_change	=	(*(c->super))->notify_change;
  	c->update_size	=	(*(c->super))->update_size;
  	c->preferred_size	=	(*(c->super))->preferred_size;
  	c->resize	=	(*(c->super))->resize;
  	c->nearest_smaller_value	=	(*(c->super))->nearest_smaller_value;
  	c->next	=	(*(c->super))->next;
  	c->compare	=	(*(c->super))->compare;
  	c->unpack_double_element	=	(*(c->super))->unpack_double_element;
  	c->unpack_double_subarray	=	(*(c->super))->unpack_double_subarray;
  	c->clear	=	(*(c->super))->clear;
  	c->make_clone	=	(*(c->super))->make_clone;
  }
  
  /* END_CLASS_IMP */
  
  static void init(grib_accessor* a,const long l, grib_arguments* c)
  {
      grib_accessor_g1date* self = (grib_accessor_g1date*)a;
      int n = 0;
  
      self->century = grib_arguments_get_name(grib_handle_of_accessor(a),c,n++);
      self->year    = grib_arguments_get_name(grib_handle_of_accessor(a),c,n++);
      self->month   = grib_arguments_get_name(grib_handle_of_accessor(a),c,n++);
      self->day     = grib_arguments_get_name(grib_handle_of_accessor(a),c,n++);
  }
  
  static void dump(grib_accessor* a, grib_dumper* dumper)
  {
      grib_dump_long(dumper,a,NULL);
  }
  
  static int unpack_long(grib_accessor* a, long* val, size_t *len)
  {   
      int ret=0;
      grib_accessor_g1date* self = (grib_accessor_g1date*)a;
  
      long year = 0;
      long century = 0;
      long month = 0;
      long day = 0;
  
      if ((ret=grib_get_long_internal(grib_handle_of_accessor(a), self->century,&century))!=GRIB_SUCCESS)
          return ret;
      if ((ret=grib_get_long_internal(grib_handle_of_accessor(a), self->day,&day))!=GRIB_SUCCESS)
          return ret;
      if ((ret=grib_get_long_internal(grib_handle_of_accessor(a), self->month,&month))!=GRIB_SUCCESS)
          return ret;
      if ((ret=grib_get_long_internal(grib_handle_of_accessor(a), self->year,&year))!=GRIB_SUCCESS)
          return ret;
  
      if(*len < 1)
          return GRIB_WRONG_ARRAY_SIZE;
  
      *val   = ((century-1)*100 + year) * 10000 + month * 100 + day;
  
      if(year == 255 && day == 255 && month >= 1 && month <= 12)
      {
          *val = month;
      }
  
      if(year == 255 && day != 255 &&  month >= 1 && month <= 12)
      {
          *val =  month * 100 + day;
      }
  
      return GRIB_SUCCESS;
  }
  
  static int pack_long(grib_accessor* a, const long* val, size_t *len)
  {
      int ret=0;
      long v = val[0];
      grib_accessor_g1date* self = (grib_accessor_g1date*)a;
  
      long year    = 0;
      long century = 0;
      long month   = 0;
      long day     = 0;
  
      if(*len !=  1)
          return GRIB_WRONG_ARRAY_SIZE;
  
      {
          long d = grib_julian_to_date((long)grib_date_to_julian(v));
          if(v != d)
          {
              grib_context_log(a->context,GRIB_LOG_ERROR,"grib_accessor_g1date: pack_long invalid date %ld, changed to %ld",v,d);
              return GRIB_ENCODING_ERROR;
          }
      }
  
      century =  v / 1000000; v %= 1000000;
      year    =  v / 10000;   v %= 10000;
      month   =  v / 100;     v %= 100;
      day     =  v;
  
      if(year == 0)
          year = 100;
      else
          century++;
  
      if ((ret=grib_set_long_internal(grib_handle_of_accessor(a),self->century,century))!=GRIB_SUCCESS)
          return ret;
      if ((ret=grib_set_long_internal(grib_handle_of_accessor(a),self->day,day))!=GRIB_SUCCESS)
          return ret;
      if ((ret=grib_set_long_internal(grib_handle_of_accessor(a),self->month,month))!=GRIB_SUCCESS)
          return ret;
      if ((ret=grib_set_long_internal(grib_handle_of_accessor(a),self->year,year))!=GRIB_SUCCESS)
          return ret;
  
      return GRIB_SUCCESS;
  }
  
  static const char* months[] = {
          "jan","feb","mar","apr",
          "may","jun","jul","aug",
          "sep","oct","nov","dec",
  };
  
  static int unpack_string(grib_accessor* a, char* val, size_t *len)
  {   
      int ret=0;
      char tmp[1024];
      grib_accessor_g1date* self = (grib_accessor_g1date*)a;
      long year = 0;
      long century = 0;
      long month = 0;
      long day = 0;
      size_t l;
  
      if ((ret=grib_get_long_internal(grib_handle_of_accessor(a), self->century,&century))!=GRIB_SUCCESS)
          return ret;
      if ((ret=grib_get_long_internal(grib_handle_of_accessor(a), self->day,&day))!=GRIB_SUCCESS)
          return ret;
      if ((ret=grib_get_long_internal(grib_handle_of_accessor(a), self->month,&month))!=GRIB_SUCCESS)
          return ret;
      if ((ret=grib_get_long_internal(grib_handle_of_accessor(a), self->year,&year))!=GRIB_SUCCESS)
          return ret;
  
      if(*len < 1)
          return GRIB_WRONG_ARRAY_SIZE;
  
      if(year == 255 && day == 255 && month >= 1 && month <= 12)
      {
          strcpy(tmp,months[month-1]);
      }
      else if(year == 255 && month >= 1 && month <= 12)
      {
          sprintf(tmp,"%s-%02ld",months[month-1],day);
          /* sprintf(tmp,"%02ld-%02ld",month,day); */
      }
      else
      {
          long x = ((century-1)*100 + year) * 10000 + month * 100 + day;
          sprintf(tmp,"%ld",x);
      }
  
      l = strlen(tmp) + 1;
      if(*len < l)
      {
          *len = l;
          return GRIB_BUFFER_TOO_SMALL;
      }
  
      *len = l;
      strcpy(val,tmp);
  
      return GRIB_SUCCESS;
  }
  
  static int value_count(grib_accessor* a,long* count)
  {
      *count=1;
      return 0;
  }
  